Ridit analysis is a non parametric method used to compare the differences between two or more ordered classification variable groups. It evaluates the order differences between groups by comparing the observed values of each group with other groups and calculating the proportional ranking of each group.

    Reference:

    [1]陈瑞芳, 陈瑞芳, & 陈瑞芳. (2013). 基于Ridit分析的学生综合素质评价研究. 中国教育信息化, 10, 45-47.

    [2]Gao, J., & Xu, X. (2016). Ridit analysis of ordinal data: A review and simulation study. Journal of Modern Applied Statistical Methods, 15(1), 69-83.

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